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MIT researchers find new mathematical relationship in superconductors

Massachusetts Institute of Technology (MIT) researchers have discovered a new mathematical relationship between material thickness, temperature and electrical resistance that appears to hold in all superconductors. The result could shed light on the nature of superconductivity and could also lead to better-engineered superconducting circuits for applications like quantum computing and...

Vector electromagnet at BESSY II creates 3D magnetic fields in samples

Together with Helmholz Centrum Berlin (HZB), teams from the Universität Regensburg, the Freie Universität Berlin and the Ruhr Universität Bochum have jointly set up a unique measurement station at BESSY II: a vector electromagnet consisting of three mutually perpendicular Helmholtz coils that enables setting the local magnetic field at the...

Balancing the Cryopreservation Equation

BioCision executives Dr. Maria Thompson, Dr. Eric Kunkel and Dr. Rolf Ehrhardt discuss the thawing arm of the "cryopreservation equation" and the need to strictly control temperature throughout the process.

SuperPower expands Quick Ship inventory

New segments have been added to SuperPower's Quick Ship inventory. The program enables the company to ship wire to clients in as little as 1-2 business days upon acceptance of a purchase order or pre-payment.

Neutrinos can deliver both full-on hits and “glancing blows”

In what they call a “weird little corner” of the already weird world of neutrinos, physicists have found evidence that neutrinos might be involved in a surprising reaction: interacting with a nucleus and leaving it basically untouched, inflicting no more than a glancing blow.

Accelerator-powered carbon dating

Accelerator mass spectrometry, an accelerator-driven form of carbon dating that requires only a tiny sample of the material, is advancing everything from archaeology to personalized medicine.

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Helium-3

Helium-3 (3He) is one of the two stable isotopes of helium. The other is the much more common Helium-4 (4He). Neither of these isotopes should be confused with He II, which is the second liquid phase of 4He. He II was discussed in this column in the Spring 2010 edition...

Cryopumping

Cryopumping refers to the use of cryogenic temperatures to produce vacuum in enclosed spaces. More broadly, it can also refer to the removal of gases via cryogenic temperatures from a flow stream or enclosure without necessarily resulting in vacuum pressures. This is an important application of cryogenics and is used...

Thermal Acoustic Oscillations

Thermal Acoustic Oscillations (TAO) are a common event in cryogenic systems that can have significant adverse effects on the performance of the system. TAOs are sustained pressure oscillations that can occur in tubes containing gas, closed at one end (the warm end) that have a very large temperature gradient along...

Air Separation and Liquefaction

by Nils Tellier, PE, President, EPSIM Corporation (CSA CSM) nils@epsim.us All illustrations courtesy EPSIM Corporation Background History of Air Separation and Liquefaction This section builds on a rich history of methods to develop deep refrigeration and cryogenic liquefaction during the 19th Century. You are encouraged to read Cryo Central’s History...

Bose-Einstein Condensate

A Bose-Einstein condensate, first proposed in 1925 by Albert Einstein based on work done by Satyendra Nath Bose (the same Bose from whom the term boson is derived), is a super-cold state of matter in which almost all of the individual atoms have “condensed” down to the lowest possible quantum...

Cold Technology for Pest Control

While it does not reach temperatures cold enough to be called cryogenic, carbon dioxide snow is at the heart of a new way of dealing with unwanted pests. It utilizes a quick freezing process that takes advantage of the properties of carbon dioxide snow and has a number of benefits...

Cryogenic Finishing

The following 3 articles discuss the uses and procedures of various type of cryogenic finishing. 1) By Robin A. Rhodes, Cryogenic Institute of New England, Inc. rrhodes@nitrofreeze.com Cryogenic Deflashing is employed to remove undesired residual mold flash that remains on molded parts after they are removed or ejected from the...

An Issue of Pressure and Flow Rate in a Supply Tank

Please help solve this problem: A supply tank requires a vaporizer to generate sufficient pressure to pump stored fluid up into a vehicle or tank. The available head is limited as the tank level falls and it is important to minimize the system pressure drop to maintain the desired flow...

Using MLI on VJ Line Joints or Cryo Storage Tanks

When installing Multi Layer Insulation (MLI) blankets on VJ line joints or cryo storage tanks should they be wrapped and tied down tight or loose? These are usually pre-cut to size. Also should they have an access hole at the point of where the molecular sieve is installed to help...